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August 25th, 2025 :: 9:29 am CDT   

Local Weather Report for
Decatur
Illinois, United States

 Current Decatur Weather Conditions Updated August 25th at 7:54 am 
Temperature:61°F Dew Point:52°F
Barometer:30.12 inHg Wind:N 15 Mph
Humidity:72.2% Visibility:0M
 
 Decatur Weather Forecast Summary  
 
Today
Aug 25th
Tuesday
Aug 26th
Wednesday
Aug 27th
Thursday
Aug 28th
Friday
Aug 29th
Mostly Sunny Cloudy Cloudy Mix of Cloud and Sun Cloudy
70°F
72°F
50°F
76°F
50°F
80°F
56°F
79°F
58°F
 
 Decatur Detailed Weather Forecast  
 
Monday, August 25th, 2025
Morning Temperature: 66°F
Sunny. Windy at times.
Afternoon Temperature: 68°F
Sunny with cloudy periods. Windy at times.
Evening Temperature: 58°F
Clear with cloudy periods.
Tuesday, August 26th, 2025
Overnight Temperature: 50°F
Clear.
Morning Temperature: 67°F
Sunny. Windy at times.
Afternoon Temperature: 69°F
Cloudy. Windy at times.
Evening Temperature: 54°F
Clear.
Wednesday, August 27th, 2025
Overnight Temperature: 51°F
A mix of cloudy and clear skies.
Morning Temperature: 70°F
Cloudy.
Afternoon Temperature: 74°F
Cloudy.
Evening Temperature: 61°F
Cloudy.
Thursday, August 28th, 2025
Overnight Temperature: 57°F
A mix of cloudy and clear skies.
Morning Temperature: 75°F
Sunny.
Afternoon Temperature: 78°F
Sunny with cloudy periods. Slight chance of a thunderstorm.
Evening Temperature: 61°F
Clear with cloudy periods with a slight chance of showers.
Friday, August 29th, 2025
Overnight Temperature: 58°F
Clear.
Morning Temperature: 73°F
Mostly sunny.
Afternoon Temperature: 73°F
Cloudy with a chance of showers. Windy at times.
Evening Temperature: 63°F
Cloudy with a slight chance of showers.
Saturday, August 30th, 2025
Overnight Temperature: 62°F
Cloudy.
Morning Temperature: 63°F
Cloudy with a chance of showers.
Afternoon Temperature: 70°F
Cloudy with a chance of showers. Windy at times.
Evening Temperature: 62°F
Cloudy. Windy at times.
Sunday, August 31st, 2025
Overnight Temperature: 62°F
Cloudy.
Morning Temperature: 69°F
Cloudy. Windy at times.
Afternoon Temperature: 68°F
Cloudy with showers likely. Slight chance of a thunderstorm. Windy at times.
Evening Temperature: 66°F
Cloudy with showers likely.
Monday, September 1st, 2025
Overnight Temperature: 65°F
Cloudy with showers likely.
Morning Temperature: 66°F
Cloudy with showers likely. Slight chance of a thunderstorm.
Afternoon Temperature: 70°F
A mix of cloud and sun with showers likely. Chance of a thunderstorm.
Evening Temperature: 65°F
Clear with cloudy periods with showers likely. Windy at times.
Tuesday, September 2nd, 2025
Overnight Temperature: 65°F
Cloudy with showers likely.
Morning Temperature: 69°F
Cloudy. Slight chance of a thunderstorm.
Afternoon Temperature: 72°F
Cloudy. Slight chance of a thunderstorm.
Evening Temperature: 65°F
Cloudy.





 

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This WeatherCity Weather Forecast for Decatur, Illinois, United States is computed using a computer-generated forecast model and should be considered experimental. Please confirm this weather information with your official weather information office

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